A cat’s fertility will gradually weaken with age and will not stop completely. The fertility of female cats begins to decline when they grow to 7 years old, and the fertility of male cats begins to decline when they grow to 6 years old. Generally, it is not recommended for cats to have children after the age of 6. By then, cats are already very old, and they will have difficulties in all aspects of their bodies after giving birth. Restore to before.